Remember that first picture of a black hole in our galaxy? We took it

Black holes are among the most profound predictions of Einstein’s theory of general relativity. Originally studied as a mere mathematical consequence of the theory rather than as physically relevant objects, they soon became thought of as generic and sometimes inevitable outcomes of the gravitational collapse that initially forms a galaxy. In fact, most physicists have suspected that our own galaxy revolves around a supermassive black hole at its center. There are other ideas too – such as “dark matter” (an invisible substance thought to make up most of the matter in the universe). But now an international team of astronomers,…

This story continues at The Next Web